Two veteran Chicago Bears defenders, cornerback Charles Tillman and weakside linebacker Lance Briggs, have been fined a total of $12,500 for what the league deemed illegal hits in the Bears' 20-13 loss to Minnesota on Monday night. In the NFL's continuing crackdown on so-called "horse-collar" tackles, Tillman is the latest player to be sanctioned, and he was fined $7,500 for using the banned technique to drag down Vikings wide receiver Robert Ferguson. The violation occurred about 2? minutes into the third quarter, when Ferguson caught a 71-yard pass on a third-and-9 play that originated at the Minnesota 28-yard line. Tillman pursued Ferguson and dragged him down from behind at the Chicago 1-yard-line. Tailback Adrian Peterson scored for the Vikings on the ensuing play. Game officials did not penalize Tillman at the time for the tackle. But in reviewing videotape from the game, league officials determined that the maneuver was a horse-collar tackle and subject to fine.